LIVEEPOOL FRESH WATER ALG.E. 275 



arrangement given in his work. In a few cases I have 

 modified this arrangement by accepting the newer classifi- 

 cations of Goebel and of Bennett and Murray. As the 

 tendency of workers in the present day is to group together 

 a large number of the simpler forms of plant life, I have 

 fallen in with the provisional division the "Protophyta" of 

 Bennett and Murray for the Protococcoideae and Chroo- 

 coccaceae. In fact I think in the present state of our 

 knowledge of the more or less distinctly unicellular organ- 

 isms that the division Protophyta is at least a convenient 

 one. 



The practice of certain writers of giving the time of 

 reproduction or " fruiting " as it is termed, is unwise and 

 misleading. In making these statements, often made on 

 too limited observation, due consideration has not been 

 given to the character of the season, conditions of sur- 

 roundings, geographical position, free or limited supply of 

 water, etc. Among the Conjugate, the Multinucleate 

 and some of the Confervaceae times of reproduction given 

 have certainly been misleading as far as this district is 

 concerned. 



I have to thank several students who have afforded 

 me help by supplying material gathered from different 

 parts of the district ; I have especially to acknowledge the 

 help rendered by Mr. T. Birks and Mr. E. H. Day both 

 of whom have collected and named several species which 

 are duly noted in this list. The total number of genera 

 recorded is 69, and of species 176. 



Letters L and C indicate counties Lancashire and 

 Cheshire. Letters (N), (B), (D) after the locality stand 

 for Narramore, Birks and Day, by whom the Algae were 

 found. 



